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Interactive effect of potassium and cadmium on growth, root morphology and chlorophyll a fluorescence in tomato plant

A hydroponic experiment was conducted to evaluate the role of potassium (K) in tomato plant growth exposed to cadmium (Cd) stress. In this work, the effects of three potassium nutrition regimes (155, 232 and 310 ppm of K) combined with Cd at different levels (0, 12 and 25 µM of CdCl(2)) on chlorophy...

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Autores principales: Naciri, Rachida, Lahrir, Meryeme, Benadis, Chahinez, Chtouki, Mohamed, Oukarroum, Abdallah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7940648/
https://www.ncbi.nlm.nih.gov/pubmed/33686172
http://dx.doi.org/10.1038/s41598-021-84990-4
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author Naciri, Rachida
Lahrir, Meryeme
Benadis, Chahinez
Chtouki, Mohamed
Oukarroum, Abdallah
author_facet Naciri, Rachida
Lahrir, Meryeme
Benadis, Chahinez
Chtouki, Mohamed
Oukarroum, Abdallah
author_sort Naciri, Rachida
collection PubMed
description A hydroponic experiment was conducted to evaluate the role of potassium (K) in tomato plant growth exposed to cadmium (Cd) stress. In this work, the effects of three potassium nutrition regimes (155, 232 and 310 ppm of K) combined with Cd at different levels (0, 12 and 25 µM of CdCl(2)) on chlorophyll content index, root and shoot dry weights, root morphology, chlorophyll a fluorescence and translocation factor were analyzed. The results showed a negative effect of cadmium, at different concentrations, on all these parameters. However, optimization of K nutrition has shown promising results by limiting the negative effect of Cd. A positive effect of the high concentration of K (310 ppm) was observed on leaf chlorophyll content and chlorophyll a fluorescence compared to 232 and 155 ppm under Cd stress. K supply improved the electron transport at PSI side indicated by the increase in the amplitude of the I–P phase of OJIP transient. Also, K at a concentration of 310 ppm significantly reduced Cd translocation from root to shoot and improved root and shoot growth parameters in the presence of Cd. K supplementation can reduce the negative effect of Cd by improving photosynthesis and promoting chlorophyll synthesis. The optimization of nutrients composition and concentration might be a good strategy to reduce the impact of Cd on plant growth and physiology.
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spelling pubmed-79406482021-03-10 Interactive effect of potassium and cadmium on growth, root morphology and chlorophyll a fluorescence in tomato plant Naciri, Rachida Lahrir, Meryeme Benadis, Chahinez Chtouki, Mohamed Oukarroum, Abdallah Sci Rep Article A hydroponic experiment was conducted to evaluate the role of potassium (K) in tomato plant growth exposed to cadmium (Cd) stress. In this work, the effects of three potassium nutrition regimes (155, 232 and 310 ppm of K) combined with Cd at different levels (0, 12 and 25 µM of CdCl(2)) on chlorophyll content index, root and shoot dry weights, root morphology, chlorophyll a fluorescence and translocation factor were analyzed. The results showed a negative effect of cadmium, at different concentrations, on all these parameters. However, optimization of K nutrition has shown promising results by limiting the negative effect of Cd. A positive effect of the high concentration of K (310 ppm) was observed on leaf chlorophyll content and chlorophyll a fluorescence compared to 232 and 155 ppm under Cd stress. K supply improved the electron transport at PSI side indicated by the increase in the amplitude of the I–P phase of OJIP transient. Also, K at a concentration of 310 ppm significantly reduced Cd translocation from root to shoot and improved root and shoot growth parameters in the presence of Cd. K supplementation can reduce the negative effect of Cd by improving photosynthesis and promoting chlorophyll synthesis. The optimization of nutrients composition and concentration might be a good strategy to reduce the impact of Cd on plant growth and physiology. Nature Publishing Group UK 2021-03-08 /pmc/articles/PMC7940648/ /pubmed/33686172 http://dx.doi.org/10.1038/s41598-021-84990-4 Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Naciri, Rachida
Lahrir, Meryeme
Benadis, Chahinez
Chtouki, Mohamed
Oukarroum, Abdallah
Interactive effect of potassium and cadmium on growth, root morphology and chlorophyll a fluorescence in tomato plant
title Interactive effect of potassium and cadmium on growth, root morphology and chlorophyll a fluorescence in tomato plant
title_full Interactive effect of potassium and cadmium on growth, root morphology and chlorophyll a fluorescence in tomato plant
title_fullStr Interactive effect of potassium and cadmium on growth, root morphology and chlorophyll a fluorescence in tomato plant
title_full_unstemmed Interactive effect of potassium and cadmium on growth, root morphology and chlorophyll a fluorescence in tomato plant
title_short Interactive effect of potassium and cadmium on growth, root morphology and chlorophyll a fluorescence in tomato plant
title_sort interactive effect of potassium and cadmium on growth, root morphology and chlorophyll a fluorescence in tomato plant
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7940648/
https://www.ncbi.nlm.nih.gov/pubmed/33686172
http://dx.doi.org/10.1038/s41598-021-84990-4
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